Integrated Services Digital Network (ISDN); Signalling System No. 7 (SS7); ISDN User Part (ISUP) version 4 for the international interface; Part 2: ISDN supplementary service [ITU-T Recommendation Q.730 (1999) modified]
NORMA vydána dne 22.7.2002
Designation standards: ETSI EN 300356-2-V4.2.1
Publication date standards: 22.7.2002
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: European technical standard
Kategorie: Technické normy ETSI